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med term
primary structures of the eye
| Term | Definition |
|---|---|
| conjunctiva | clear membrane that lines the anterior eye and eyelids |
| sclera | white part of the eye that maintains the eye shape and protects the inner tissues |
| cornea | transparent layer over the iris and pupil |
| choroid | blood-rich layer under the sclera |
| pupil | black circular opening that allows light in |
| iris | colored muscular after that surrounds the pupil |
| ciliary body | muscles and ligaments that adjust the eye shape for focusing on objects |
| aqueous humor | anterior chamber fluid that gives the eye shape and provides nutrients to lens and cornea |
| vitreous humor | clear gel-like fluid in posterior chamber of the eye that keeps retina in place |
| retina | thin layer of tissue in posterior eye that converts light to neural signals as vision |
| photoreceptors | light sensitive cells that receive images and convert them to nerve impulses |
| rods (photoreceptor 1) | allows us to see in dim vision (black and white receptors) |
| cones (photoreceptor 2) | color receptors |
| macula | area with large amount of cones for high acuity vision |
| optic nerve (second cranial nerve) | transports impulses from retina to brain |
Created by:
elianag